Powered Aire, Inc. Model CHA Unheated/Electrically/Hot Water/Steam Heated Basis-OfDesign Guide Specification
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SECTION 15834 [23 34 33] – AIR CURTAINS
PART 1 -GENERAL
1.01
SUMMARY:
A.
1.02
This Section includes air curtains.
DEFINITIONS:
A.
For convenience purposes a few definitions are indicated herein. All capacities, ratings and other specified and scheduled air
curtain criteria are based on these definitions.
1.
Air Curtain: An air moving device which produces a directionally-controlled airstream, moving across the entire
height and width of an opening.
2.
Unit Airflow Rate: The airflow volume which leaves the discharge nozzle, at standard air conditions, and reported in
CFM.
3.
Average Outlet Velocity: The airflow rate produced by the air curtain divided by the cross sectional area of the
discharge nozzle plane at free-air delivery, and reported in FPM.
4.
Outlet Air Velocity Uniformity: An indicator of the consistency of air velocities across the air curtain width, expressed
as a percentage.
5.
Air Discharge Angle: The angle between the plane of the protected opening and the direction in which the air stream
leaves the discharge.
1.03
SYSTEM DESCRIPTION:
A.
An air curtain is an air moving device which produces a directionally-controlled airstream, moving across the entire height and
width of an opening.
1.04
SUBMITTALS:
A.
Submittals are required to show full compliance with the contract documents.
B.
Indicate each air curtain tag/mark number on the submittal as applicable.
C.
Product Data:
1.
Product Data must have the specific Contract Document air curtain mark/tag on each submittal with all information
associated with each unit clearly identified. Where information does not apply to the product being provided then such
information must be marked off on the submittal.
2.
Rated capacities showing compliance with Contract Document requirements scheduled on drawings.
Capacities
including but not limited to: Airflow (CFM), discharge velocity (FPM), noise rating (dBA), motor quantity and
horsepower, electrical ratings (FLA, volts/phase/hertz), outlet velocity uniformity (%), unit assembly weight (lbs).
3.
Mechanical Drawings.
4.
Wiring Diagrams.
5.
Standard product features.
6.
Optional product features and accessories.
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
D.
Shop Drawings:
1.
Provide drawings showing air curtain assembly and parts.
2.
Wiring Diagrams: Power, signal, and control wiring.
The wiring diagram must indicate a clear distinction between
manufacturer’s factory furnished and installed wiring, and contractor furnished and installed wiring for all power,
signal and control wiring and accessories.
E.
Installation Instructions:
Manufacturer’s installation instructions with diagrams, instructions and manufacturer’s contact
information.
F.
Operation and Maintenance Data:
Complete documentation of manufacturer’s recommended operation and maintenance
procedures for the air curtain including commissioning procedures.
1.05
G.
Manufacturer’s Warranty statement for products and parts.
H.
Contractor’s Warranty statement for repair and replacement of products and parts.
QUALITY ASSURANCE:
A.
The Contract Document Drawings and Specifications indicate the “basis-of-design” manufacturer, model, size, profiles, and
dimensional requirements of air curtains.
B.
Comply with NFPA 70 - National Electrical Code.
C.
Hot Water/Steam coils certified to ARI standard 410.
D.
ETL Listed (Tested in accordance with UL 1995, 4th Edition, dated October 14, 2011 including revisions through October 3,
2014 and CSA C22.2 No. 236-11, 4th Edition, dated October 14, 2011 including revisions through October 3, 2014).
1.06
E.
Comply with all applicable ordinances, codes and standards as required by the authorities having jurisdiction.
F.
All units tested in accordance with ANSI/AMCA 220. Unheated units shall bear AMCA Seal for Performance.
COORDINATION:
A.
Coordinate layout and installation of air curtains, mounting system and all components associated with the air curtains with other
construction.
B.
Notify the architect/engineer of any coordination conflicts prior to installation of the air curtain or other associated parts and
accessories so that the installation can be coordinated prior to installation. Any installation that is commenced or completed
without coordination is subject to rejection of the work and must be redone as required to meet the intent of the contract
documents.
1.07
WARRANTY:
A.
Provide manufacturer’s standard warranty for replacement of parts for a period of (24 months for unheated units and 18 months
for heated units) from the time of shipment from the manufacturer. The warranty must cover all parts, components, accessories,
etc. provided with the air curtain whether or not the parts, components or accessories are the direct product manufactured by the
air curtain manufacturer.
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
PART 2 -PRODUCTS
2.01
MANUFACTURER[S]:
A.
Basis-Of-Design Manufacturer:
1.
All air curtains furnished are complete factory assembled units as manufactured by Powered Aire Inc.
Address: 109 Mortensen Road, Greenville, PA 16125
Toll Free Phone: 1-888-321-2473
B.
[Other Acceptable Manufacturers: Subject to compliance with requirements of the Contract Documents
Other Acceptable Manufacturers must show full compliance with the intent of the basis-of-design
manufacturer model’s performance as well as all other specified features and characteristics. A line-by-line comparison of any
variances from any of the basis-of-design performance, features or characteristics must be provided by the other acceptable
manufacturers with a clear explanation of how the other acceptable manufacturer’s unit meets or exceeds the intent of the basisof-design specified unit make and model.]
2.02
1.
[The engineer may list another manufacturer of air curtains here.]
2.
[The engineer may list another manufacturer of air curtains here.]
3.
[The engineer may list another manufacturer of air curtains here.]
EQUIPMENT BASIC DESCRIPTION – BASIS-OF-DESIGN
A.
Each unit consists of a factory assembled casing, centrifugal fans, slotted grill, discharge nozzle, motor(s), and access panels for
motor and fan assembly. Additional accessories as specified. The air curtain provides a specific CFM and a uniform outlet
velocity across the entire length of the discharge nozzle area. A remote or unit mounted Nema 12 control panel will be provided.
2.03
CASING:
A.
Housing Materials: Bottom intake slotted grill shall be painted steel. Other casing shall be galvanized steel.
B.
Unit Support: Integral to the unit frame or casing. All weight bearing structural support shall be formed galvanized steel. Units
shall be furnished in single increments of sufficient structural strength to be supported from the top per manufacturer’s
instructions.
2.04
AIR DISCHARGE NOZZLE
A.
Discharge nozzle shall be high efficiency discharge plenum. Air curtain creates a positive air seal with directional air foil vane.
The vane shall facilitate a deflection of the air stream by +/- 20 degrees.
2.05
2.06
FANS
A.
Wheels: Galvanized forward curved centrifugal type, double inlet design, with zinc plated hubs.
B.
Drives: Direct Drive. Belt Drive Not Acceptable.
MOTORS:
A.
Type: Open Drip Proof (ODP), resiliently mounted, continuous duty, air over with integral thermal-overload protection.
B.
Bearings: Heavy duty type permanently lubricated, shielded ball bearings of equal size.
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
2.07
[ELECTRIC HEAT]:
A.
Description: Factory mounted electric heating elements. The heater shall consist of factory wired heating coil.
Heating elements shall be mounted inside the air curtain plenum on the discharge side of the blowers.
2.08
B.
Heating Element: Helical coil with point suspension of elements.
C.
Power Supply: Single point [multi-point] power connection and control wiring to the air curtain.
D.
Heater Casing: Galvanized steel.
E.
Protection: Automatic reset thermal overloads and contactor interlock.
F.
Electric Heater Controls: See ACCESSORIES
[HOT WATER HEAT]
A.
Description: Factory mounted hot water coil. The coil shall be mounted to the intake of air curtain.
B.
Hot Water Supply and Return Piping Connections: Threaded
C.
Tubes: Copper, complying with ASTM B 75.
D.
Tube Diameter: 0.625 inch. O.D.
E.
Fin and Tube Joint: Mechanical bond
F.
Headers: Seamless copper tube with brazed joints.
G.
Ratings: According to ARI standard 410.
H.
Source Quality Control: Coils shall be tested at 550 psig using dry nitrogen, submerged under water. Dual-operator verification
shall determine that all coils are leak-free.
2.09
I.
Coil Connections: [Left Hand Supply, Right Hand Supply, Left Hand Return, Right Hand Return].
J.
Valves and Valve Controls by contractor.
[STEAM HEAT]
A.
Description: Factory mounted steam coil. The coil shall be mounted to the intake of air curtain.
B.
Steam and Condensate Piping Connections: Threaded
C.
Tubes: Copper, complying with ASTM B 75.
D.
Tube Diameter: 0.625 inch. O.D.
E.
Fin and Tube Joint: Mechanical bond
F.
Headers: Seamless copper tube with brazed joints.
G.
Ratings: According to ARI standard 410.
H
Working-Pressure Ratings: 200 psig, 325 deg F.
I
Source Quality Control: Coils shall be tested at 550 psig using dry nitrogen, submerged under water. Dual-operator verification
shall determine that all coils are leak-free.
2.10
J.
Coil Connections: [Left Hand Supply, Right Hand Supply, Left Hand Return, Right Hand Return]
K.
Valves and Valve Controls by contractor.
[FILTERS]
A.
2.11
Filter Type: ½” thick cleanable.
[ACCESSORIES] (Optional Features-If desired please include on schedule) (The air curtain must be interlocked with the door, this could
be by a door switch, through a dry contact in the door controller or by other means.)
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15834 [23 34 33]
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A.
SECTION 15834 (23 34 33) – AIR CURTAINS: continued
Automatic Door Switch: Remotely installed in the door area to activate the unit each time the door opens and
deactivate the unit each time the door closes. [Roller/plunger, Magnetic]
B.
Disconnect: [panel mounted], [fused, non-fused]
C.
Adjustable Time Delay: Integral part of the unit, only used with an automatic door switch. Air curtain to operate until specified
time (adjustable 1 to 100 seconds) after the door closes.
D.
Hand/Off/Auto Switch: Acts as an override to the automatic door switch. In Hand position the air curtain is on, in Off position
the air curtain is off, and in Auto position the air curtain runs via the automatic door switch. [panel mounted, remote mounted]
E.
Thermostat: Controls electric heaters. [line voltage, low voltage], [panel mounted, remote mounted]
F.
Heat On/Off Switch: Controls electric heaters. [panel mounted, remote mounted]
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
PART 3 -EXECUTION
3.01
EXAMINATION:
A.
Examine the installation location where each air curtain will be installed to confirm that the installation location is in accordance
with the Contract Documents and the Manufacturer’s Installation Instructions.
B.
If there are any concerns regarding the installation location with respect to any aspect of the installation or performance of the air
curtain notify the architect/engineer in order to resolve the concern.
3.02
INSTALLATION:
A.
3.03
SYSTEM STARTUP
A.
3.04
B.
Perform the following field tests and inspections and prepare test reports:
1.
After installing air curtains completely, perform visual and mechanical check of individual components.
2.
After electrical circuitry has been energized, start unit to confirm motor rotation and unit operation.
3.
Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.
Repair or replace malfunctioning units and retest as specified above.
ADJUSTING:
A.
3.06
Startup each air curtain in accordance with the manufacturer’s Operations and Maintenance Manual and Installation Instructions.
FIELD QUALITY CONTROL:
A.
3.05
Install each air curtain in accordance with the Installation Instructions provided by the manufacturer of the air curtain.
Adjust air-directional vanes.
CLEANING:
A.
Clean the outside of each air curtain of any dirt, debris, grease, grime or other material.
B.
Clean the inside of each air curtain of any dirt, debris, grease, grime or other material as necessary to ensure proper operation.
Remove any loose debris that may be of harm to the air curtain operation.
C.
3.07
Remove, clean and reinstall the cleanable air filters, if provided.
DEMONSTRATION:
A.
Contractor to instruct the Owner's maintenance personnel on how to adjust, operate, and maintain air curtains.
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
3.08 SCHEDULE:
UNHEATED AND ELECTRICALLY HEATED AIR CURTAIN SCHEDULE
Mark
BasisOfDesign
Manufacturer
AC1
AC2
AC3
AC4
Powered Aire
Powered Aire
Powered Aire
Powered Aire
Model
Airflow
Rate At
Nozzle
Outlet
(CFM)
on High
Average
Outlet
Velocity
(FPM)
on High
Outlet
Velocity
Uniformity
(%)
Motor
(Quantity/HP)
Door
Width
Heating
Capacity
(KW)
Heater
Voltage
(V/Ph/Hz)
Heat Rise
(F)
on High
Motor
Voltage
(V/Ph/Hz)
[1,2,3,4] @ 3/4
Sound
Level
(dBA)
on High
Notes
63
(1) (2)
(1) (2)
Notes:
(1) Sound Level is measured 10 feet from the air curtain in a free field based on a one motor unit.
(2) The specification requirements for these accessories are as indicated in the Air Curtain section of the Specification section of these Contract Documents. Provide the following
accessories for this unit: [Disconnect, Automatic Door Switch, Adjustable Time Delay, Hand/Off/Auto Switch, Thermostat, Heat On/Off Switch]
HOT WATER HEATED AIR CURTAIN SCHEDULE
Mark
BasisOfDesign
Manufacturer
AC1
AC2
AC3
AC4
Powered Aire
Powered Aire
Powered Aire
Powered Aire
Model
Airflow
Rate At
Nozzle
Outlet
(CFM)
on High
Average
Outlet
Velocity
(FPM)
on High
Outlet
Velocity
Uniformity
(%)
Motor
(Quantity/HP)
Door
Width
mbtu/hr
Hot
Water
Entering
Water
Temp.
(F)
[1,2,3,4] @ 3/4
GPM
Temp.
Rise
(F)
Motor
Voltage
(V/Ph/Hz)
Sound
Level
(dBA)
on High
Notes
63
(1) (2)
(1) (2)
Notes:
(1) Sound Level is measured 10 feet from the air curtain in a free field based on a one motor unit.
(2) The specification requirements for these accessories are as indicated in the Air Curtain section of the Specification section of these Contract Documents. Provide the following
accessories for this unit: [Disconnect, Automatic Door Switch, Adjustable Time Delay, Hand/Off/Auto Switch]
SUB-MASTER – BASIS-OF-DESIGN: POWERED AIRE, INC.
15834 [23 34 33]
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SECTION 15834 (23 34 33) – AIR CURTAINS: continued
STEAM HEATED AIR CURTAIN SCHEDULE
Mark
BasisOfDesign
Manufacturer
AC1
AC2
AC3
AC4
Powered Aire
Powered Aire
Powered Aire
Powered Aire
Model
Airflow
Rate At
Nozzle
Outlet
(CFM)
on High
Average
Outlet
Velocity
(FPM)
on High
Outlet
Velocity
Uniformity
(%)
Motor
(Quantity/HP)
Door
Width
mbtu/hr
Steam
[1,2,3,4] @ 3/4
Steam
Pressure
(psi)
Temp.
Rise
(F)
Motor
Voltage
(V/Ph/Hz)
Sound
Level
(dBA)
on High
Notes
63
(1) (2)
(1) (2)
Notes:
(1) Sound Level is measured 10 feet from the air curtain in a free field based on a one motor unit.
(2) The specification requirements for these accessories are as indicated in the Air Curtain section of the Specification section of these Contract Documents. Provide the following
accessories for this unit: [Disconnect, Automatic Door Switch, Adjustable Time Delay, Hand/Off/Auto Switch]
END OF SECTION 15834 [23 34 33]
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15834 [23 34 33]
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